It remains 100% backwards compatible in fit

With its compact footprint and universal quick-connect terminals

Versatile 4-Speed Tap: Allows for precise airflow calibration across different static pressure environments

Manual Fan Switch: Provides the operator with direct control over the blower for ventilation without engaging the burner

5 amp efficiency under load

Nordyne 632636 Pressure Switch 320788-703 It remains 100% backwards compatibleThe Nordyne 632636 Pressure Switch is a critical safety component designed for specific HVAC furnace systems, ensuring the inducer motor generates sufficient vacuum before allowing the ignition sequence. This differential air pressure switch features a precise set point of 0. 45" WC, making it a direct replacement for failing or stuck open switches in Miller, Intertherm, and Nordyne units. When diagnosing furnace pressure switch failure, verify that